Mark One
4 o'clock and 8 o'clock Positions
The Mark One paddle's optimal location to place weights is in the 4 and 8 o'clock positions. This adds some power, stability and also improves the sweet spot. This is a great place to add the weights since the paddle is built with balance in mind.
Mark OneX
4/5 o'clock and 8/7 o'clock Positions
For the OneX, the optimal spot for weights starts at the 4 and 8 o'clock positions. Since this paddle has that a whipping feeling, we need to bring more stability to the paddle and also increase the hitting area due to the extended handle length.
Mark Two
5 o'clock and 7 o'clock Positions
The weights for the Mark Two are best placed between the bottom corners and the handle. This adds stability and improves the sweet spot moderately.